Statistics for occurrence #1 of “Cumberland rivers” in chapter 3 of Adam Badeau, Military history of Ulysses S. Grant from April 1861 to April 1865. Volume 1:

...the propriety of subduing Fort Henry, near the Kentucky and Tennessee line, and holding the position. If this is not done soon, there is but little doubt that the defences on both the Tennessee and Cumberland rivers will be materially strengthened. From Fort Henry, it will be easy to operate either on the Cumberland (only twelve miles distant), Memphis, or Columbus. It will, besides, have a moral effect upon...
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